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Chapter 74: Be a student again

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    Amidst the deafening sound of firecrackers, another new factory took root in the military subdivision and was officially put into use.  This is a newly established component factory.  On its periphery, there are several small subordinate factories, including resistor factory, capacitor factory, diode factory, etc.  However, these factories are still under construction and cannot be put into use yet.  Although the opening ceremony was still grand, with all the main leaders of the military division headed by Guan Fei in attendance, there were far fewer people coming to watch.  The school no longer organized social studies, but only sent a representative from each class to observe the ceremony.  These student representatives were very excited to see another new factory being built. They applauded and laughed, but the number of people was still too small, and the lively atmosphere was far less enthusiastic than the first time.  "Congratulations!" At the end of the opening ceremony, Zhao Wenliang of the National Semiconductor Research Institute raised his hand to Guan Feigong and congratulated him repeatedly.  He and Fan Zhe, a senior researcher at the Capital Machinery Design Institute, came here just to get parts processed and manufactured in China.  At this point, it was confirmed that these parts were, as they predicted, designed for assembly of component production lines. The core precision component drawings were not delivered to the country, but were manufactured by the military division itself.  Since you are here, of course you have to see the whole set.  Therefore, Zhao Wenliang and Fan Zhe did not leave with He Tao, but stayed to follow and understand all the relevant content of the production line.  Although Guan Fei transferred the drawings for free in order to allow the educated youth in the military division to qualify for the college entrance examination, they still did not leave. Instead, they discussed with Guan Fei and others, and even participated in the assembly line by themselves regardless of the oil pollution.  No matter how good the drawings are, they are always false.  What is shown on paper is ultimately shallow without actual participation. Many assembly points and precautions cannot be seen by looking at the drawings.  This is called craftsmanship.  No matter how much the country is blocked, we can still get some advanced equipment from abroad, especially from Europe and the United States.  In order to master the technical points and produce it on its own, the country has extremely deep reverse engineering capabilities. ????????????????????????????????????????????????????????????????????? Extreme care is taken when disassembling. After measuring with instruments and drawing up a detailed disassembly plan, and after having a response plan for any problems that arise, experienced masters will dismantle them themselves.  Every time a part is disassembled, it will be photographed again, and multiple complete mechanical structure drawings will be drawn. One copy will be immediately sent to the file for storage, and the copied drawing will be used as a basis for analysis and manufacturing.  For the metal components of the parts, experts from the Materials Research Institute will scrape off a little powder and use the most advanced equipment such as electron microscopes to analyze it.  The metallurgical process will also be deduced based on the alloy formula, molding state, and residual components.  It can be said that with the complete reverse engineering in China, a comprehensive set of drawings can be established for any component in China, and its principles, materials, and manufacturing methods can be deduced, and then a set can be manufactured by itself.  Comes with an almost exact replica of the original.  However a replica is a replica after all. No matter how advanced the equipment is, scientific reverse reasoning cannot completely restore the product.  Because of the lack of the most critical manufacturing process!  We can copy the shape and use materials with similar properties to make a certain part to replace the prototype.  However, system synthesis is a very serious topic. Why this material is used for this part, and whether some other technological means are used during the processing to enhance hardness, strength, toughness, etc., are all  It is the final result obtained after extremely rigorous calculations.  If you just copy the appearance, if there is no comprehensive manufacturing process to match it, the drawings are just drawings, not to say worthless, at least the value is far less than imagined.  For example, the earliest cement production line drawings given by Guan Fei were produced in China and put into Zhengzhou Cement Factory for trial operation.  This production line has been modified in some parts based on China's own manufacturing capabilities and processing costs, and it feels that it should be more suitable for domestic needs.  However, during the production process, problems frequently occurred in this modified production line, and the quality fluctuated. The technicians did not dare to leave 24 hours a day, so they stayed by the production line to find the cause.  Some reasons were quickly found and solved, but for some reasons, technicians racked their brains and couldn't figure it out.  Even if they shut down the production line for inspection, they could not find the problem. They could only calculate and extrapolate repeatedly. The relevant calculation data was piled up in a thick pile, far exceeding the weight of the production line drawing itself, but they still could not find the problem.  ?Now.  But here in the military division, the same original production line produced in China was assembled under the guidance of Guan Fei, and there seemed to be no difference in the middle.  However, since it started running, there have only been a few minor problems, which were quickly eliminated. It has been running smoothly until now and has entered full-load production. ??????????? You don¡¯t know anything if you don¡¯t know it, and you will be shocked when you compare it.  "The same drawings, the same manufacturer, why can other people use it so easily, but we just make a small change, and there are always problems?"  The technicians of the manufacturer were so worried that their hair almost fell out. There was really no other way. They simply packed their bedding and stayed at the cement factory in the military subdivision. They vowed not to go back until the problem was found.  As a result, they only stayed for more than half a month, and the technical problems that had troubled them for more than half a year were solved under Guan Fei's guidance.  The manufacturer¡¯s technicians suddenly realized that it was so simple!  The key factor causing unstable quality is that they modified the production drawings without authorization.  And due to insufficient understanding of material properties and air flow, local heating of a certain internal space is insufficient.  Unfortunately, this problem can only be monitored after the machine is turned on, and the manufacturer lacks suitable monitoring equipment to find internal heat changes, so the cause has never been found.  They asked Guan Fei this question as soon as they arrived, but Guan Fei didn¡¯t know.  Domestic manufacturers didn't want to show their revised drawings to Guan Fei yet, so the technicians were stationed at the Military Division Cement Factory, looking at them all day long, measuring constantly, and judging based on the data. They were all the same as in China.  , why can't you find the difference between the two even to death?  It wasn¡¯t until the technicians were exhausted and the manufacturer couldn¡¯t stand it any longer that the revised drawings were handed over to Guan Fei.  Guan Fei got the drawings and only looked at them for more than ten minutes. He used pen and paper to calculate the possible problems. Then he called the manufacturer and asked him to make slight modifications to the shape of the calcining tank.  So So the problem is solved!  When we got here, everyone could only give Guan Fei a thumbs up and say "submit"!  Before leaving, the technicians carefully put away the scratch paper that Guan Fei used for calculations. The heat calculation formula on it was something they had never learned before.  As long as you understand this trick and draw inferences from one example in the future, it will be of immeasurable value to the domestic manufacturing of calcination vessels more scientifically, and even the calculation of heat in metal smelting.  With this example in front of them, it is even more impossible for Zhao Wenliang and Fan Zhe to leave.  The two divided the work. Fan Zhe measured the size of each component every day and compared it with the drawings to see if there was any mechanism hidden in the middle.  At the same time, during the manufacturing process of precision parts, he stayed by the side from the beginning of initial processing. He would record every small movement of the workers, for fear that there was some trick they didn't know about in this small movement.  Primary processing, heat treatment, stress elimination, fine processing, fine processing, Fan Zhe only slept for three or four hours a day. As long as he was awake, he was absolutely soaked in the production workshop and was inseparable.  Zhao Wenliang is better than him.  He was responsible for the circuit part of the system. In order to get started, he simply volunteered to be a front-line worker. He rolled up his sleeves and practiced the entire process step by step, starting from circuit board production, component selection, and circuit diagram principles.  The component production line designed by Guan Fei adopts a large number of automated controls, and the main control chips use Z80 chips.  Various instructions for this kind of chip have long been given to the country, and Zhao Wenliang also systematically supplemented this knowledge.  But in practical application, he was still shocked by the control program designed by Guan Fei.  What is the difference between a master chef and an ordinary chef?  The difference is that a master can use the same ingredients as an ordinary chef to cook delicious dishes that everyone will praise!  In his eyes, Guan Fei is such a master, a master in electronics.  With the same control program, he quietly tried to compile it himself, but when he compiled it and compared it with the program designed by Guan Fei, he was immediately stunned: there was not much difference in big aspects, but in terms of details, the difference was huge!  While he was desperately searching for various information, he was comparing the programs compiled by Guan Fei and comparing the similarities and differences. It took him a long time to understand why Guan Fei designed it this way.  Because the program designed by Guan Fei not only takes into account local link control, but also fully considers a series of factors such as the mechanical performance of the equipment, the performance of the raw materials, the conveying speed, the manufacturing temperature, etc., and finally calculates the optimal control parameters.  Just after the assembly of the production line was completed, in order to test the equipment, on the day of trial operation, the electrical performance of the finally manufactured devices made him have to admit that the control program designed by Guan Fei was the best.    How good is it?  It can be summed up in one sentence: In this production line, it cannot be changed!  Perhaps this program cannot be applied to other production lines, and even if it is simply applied, the performance will be compromised.  But in this production line, this control program is the unique and best choice, and there is absolutely no possibility of being replaced by another system!  During the actual contact with Guan Fei, Zhao Wenliang also changed from being polite at first, to feeling that this young man has very solid skills, to "gosh, he is so awesome", to discussing to asking for advice, and finally even  I wish I could become my teacher.  He can say without exaggeration that the most awesome electronic engineer he has ever seen in his life is Guan Fei!  There¡¯s nothing like it!  When he was young and studying, he admired his mentor.  Later, when I went to study in the Soviet Union, I also admired Soviet experts.  Later, he himself became an expert. Gradually, there were fewer and fewer people that he admired. When discussing technical issues with others, his attitude gradually changed from being an equal to looking down from above. Most of the time, he was not discussing with others.  Rather, it is to point out the angle from which the other party should look at the problem and how to solve it.  After so many years, he suddenly looked up at Guan Fei again. This look up was not unwilling, but an eagerness to look up but couldn't get it - even if Guan Fei casually told him  The above few sentences were like a deafening sound to him, and they could completely solve the problem that he had not solved for many years!  It¡¯s a pity that Guan Fei is too busy to talk to him in detail.  Guan Fei always goes to inspect the troops every morning. He wants to stay by his side during this process, but the other party won't allow him.  In the afternoon, he either participated in the manufacturing of precision components or inspected the construction of new cities and students' studies. He only had little time to give him some advice.  In order to get more advice from Guan Fei, Zhao Wenliang also learned to get up early. Taking advantage of the half hour of morning exercises, while running out of breath, he asked Guan Fei for advice on the problems he had accumulated for many years. ???????????????? Guan Fei never takes himself too seriously, and will give detailed answers to every question he asks.  Some of the cutting-edge research of this era, he can also talk about the ugly Yinmao in a clear way. At least with Zhao Wenliang's level of knowledge, he can't hear whether there is anything wrong in it, and he often even thinks that the result may be like this.  Facing Guan Fei, it was difficult for him to connect him with a young man who was only twenty-five years old this year. Subconsciously, he always felt that the other person was a highly respected academic leader, and he felt no shame in asking him for advice.  .  He feels that the past few months in the military division have been the months when his academic ability has improved by leaps and bounds.  He thought that at his height and age, it would be impossible to grow as fast as he did when he was young and in school.  After all, it was starting from scratch and systematically instilling a large amount of ready-made knowledge into the brain. After so many years of study and practice, such an opportunity is basically no longer possible.  However, reality told him that this was possible.  As long as he follows a good teacher with extensive knowledge, he will have enough time to realize that there is so much knowledge in the field he is familiar with that he has never mastered.  Even in a field that he thought he was very skilled in, Guan Fei just changed his angle of explanation and suddenly realized that this problem could still be viewed and applied in this way!  He doesn¡¯t have any ideas now, he just wants to stay as a student and study with Guan Fei.  At the same time, the process of using the production line is also fully mastered, and then it is recorded truthfully and sent back to the country to help the country improve the manufacturing level of the basic electronics industry.  That¡¯s all!
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